WO2018181440A1 - Vacuum heat insulation case and refrigerator using same - Google Patents

Vacuum heat insulation case and refrigerator using same Download PDF

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Publication number
WO2018181440A1
WO2018181440A1 PCT/JP2018/012673 JP2018012673W WO2018181440A1 WO 2018181440 A1 WO2018181440 A1 WO 2018181440A1 JP 2018012673 W JP2018012673 W JP 2018012673W WO 2018181440 A1 WO2018181440 A1 WO 2018181440A1
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WO
WIPO (PCT)
Prior art keywords
vacuum heat
heat insulating
vacuum
present disclosure
refrigerator
Prior art date
Application number
PCT/JP2018/012673
Other languages
French (fr)
Japanese (ja)
Inventor
智章 北野
平野　俊明
秀司 河原崎
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2017066970A external-priority patent/JP2018169097A/en
Priority claimed from JP2017066972A external-priority patent/JP6850967B2/en
Priority claimed from JP2017066971A external-priority patent/JP2018168949A/en
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201880021971.0A priority Critical patent/CN110494706B/en
Publication of WO2018181440A1 publication Critical patent/WO2018181440A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls

Definitions

  • the present disclosure relates to a vacuum heat insulation casing used for a refrigerator, a refrigerator using the same, and a foam molding die for foaming a core material used for the vacuum heat insulation casing.
  • a vacuum heat insulation panel 34 provided in a space inside the door frame body 30 and a reinforcement provided in contact with the side surface of the door frame body 30.
  • a structure having a member 35 has been proposed. With such a structure, the heat insulation performance is improved.
  • a vacuum heat insulation panel means the structure which improved the heat insulation performance by making the inside of a plate-shaped container into a vacuum (for example, refer patent document 1).
  • the door frame 30 is configured by the vacuum heat insulation panel 34 and the reinforcing member 35 provided in contact with the side surface of the door frame 30 in the internal space.
  • Reference numeral 35 denotes another component independent of the vacuum heat insulation panel 34.
  • the heat insulating performance in the vicinity of the reinforcing member 35 is different from the heat insulating performance of the vacuum heat insulating panel 34. For this reason, in the conventional structure as described above, there is a problem that the door frame 30 is warped due to the deterioration of the heat insulating performance and the temperature difference between the inside and outside of the refrigerator.
  • the flat vacuum heat insulation panel 34 and the heat insulation member 37 are combined in the heat insulation space inside the door frame 30.
  • the vacuum heat insulation panel 34 and the heat insulation member 37 are independent components, there is a problem that the heat insulation performance is also deteriorated.
  • the present disclosure has been made in view of the conventional problems as described above, and is a vacuum heat insulating casing (for example, a door body) that can achieve both improvement in heat insulation performance and improvement in rigidity such as warpage deformation caused by a difference in internal and external temperatures. )I will provide a.
  • a vacuum heat insulating casing includes an outer plate, an inner plate, and a vacuum heat insulating body disposed between the outer plate and the inner plate.
  • a vacuum heat insulator includes a core material and a reinforcing member inside, and the inside is vacuum-sealed by a seal member and a base member.
  • the vacuum insulation body having the core material and the reinforcing member inside improves the heat insulation performance, and even if a temperature difference occurs between the inner and outer surfaces of the vacuum insulation case, the vacuum insulation case is warped. It can be suppressed for a long time.
  • the core member and the reinforcing member may be integrally configured.
  • the reinforcing member is formed integrally with the core open-cell urethane foam, so that the bending rigidity is improved. Therefore, the reinforcing member is generated due to thermal contraction due to the difference in environmental temperature between the inner and outer surfaces of the vacuum heat insulating casing. Warpage deformation can be further suppressed.
  • the reinforcing member is made of a material that has less change due to thermal shrinkage than the open-cell urethane foam of the core material, and thus occurs due to thermal shrinkage due to the environmental temperature difference between the inner and outer surfaces of the vacuum heat insulating casing. Warpage deformation can be reliably suppressed.
  • a vacuum heat insulating casing includes an outer plate, an inner plate, and a vacuum heat insulating body disposed between the outer plate and the inner plate.
  • a vacuum heat insulating body has a core material inside.
  • the vacuum heat insulator is configured such that the inside is vacuum-sealed by a seal member and a base member.
  • the inner plate is configured so that the thickness of the outer peripheral portion is larger than the thickness of the inside of the warehouse.
  • the base member may be formed by laminating different thermoplastic resins. With such a configuration, it can be formed into a free shape by vacuum forming or the like. Further, with such a configuration, it is possible to prevent intrusion of gas such as water and air from the outside after vacuum sealing, and the degree of vacuum can be maintained, so that the heat insulating performance can be maintained for a long time.
  • the sealing member may be configured by laminating both surfaces of an aluminum foil with a resin film.
  • the vacuum heat insulating casing may include an adsorption member inside the vacuum heat insulating body in a form having at least one of the above characteristics.
  • a refrigerator according to an example of the present disclosure includes a vacuum heat insulating casing having at least one of the above-described features. With such a configuration, it is possible to provide a highly reliable refrigerator in which the heat insulating performance can be maintained for a long time and the external appearance deformation is suppressed.
  • the present disclosure provides a vacuum heat insulating casing that can improve productivity and maintain heat insulating performance for a long period of time.
  • a vacuum heat insulating housing includes an outer plate, an inner plate, and a vacuum heat insulating member disposed inside the outer plate and the inner plate.
  • a vacuum heat insulating body has a core material and an adsorption member inside. The adsorption member is disposed on the high temperature side of the vacuum heat insulator.
  • the vacuum heat insulating body is hermetically sealed with a seal member and a base member.
  • the suction member disposed on the core material in the vacuum heat insulating body is disposed on the outer plate side (high temperature side) of the core material.
  • the adsorption rate can be increased from the adsorption rate and environmental temperature characteristics.
  • the degree of vacuum in the vacuum heat insulating body can be maintained over a long period of time while the refrigerator is assembled and the refrigerator is operated.
  • a highly reliable refrigerator can be provided by providing the vacuum heat insulation housing
  • the core material may be formed of an open-cell urethane foam that is a porous structure.
  • the core material may have a suction member recess in which the suction member is disposed.
  • the adsorption member is configured to adsorb water, air, and gas generated inside the vacuum heat insulating housing, and water, air, and gas entering from outside. May be. With such a configuration, the degree of vacuum in the vacuum heat insulating body can be maintained for a long time, and the heat insulating performance can also be maintained for a long time.
  • a refrigerator according to an example of the present disclosure includes a vacuum heat insulating housing having at least one of the characteristics related to the vacuum heat insulating body. With such a configuration, it is possible to provide a highly reliable refrigerator capable of improving productivity and ensuring heat insulation performance over a long period of time.
  • the present disclosure provides a foam mold for manufacturing a vacuum heat insulation casing, in which the entire space inside the vacuum heat insulation casing is configured to be integrally integrally formed with open cell foamed urethane.
  • the foam mold according to an example of the present disclosure is an open-cell foamed urethane foam mold, and the foam mold includes a main body portion and a lid portion.
  • the main body portion and the lid body portion are configured to be openable and closable, and the mating surface between the main body portion and the lid body portion of the foam molded product has a gas venting structure.
  • the main body portion may be constituted by a split die.
  • the mating surface of the split mold may have a gas venting structure.
  • the lid portion may be configured by a split die.
  • the mating surface of the split mold may have a gas venting structure.
  • a foam molded article according to an example of the present disclosure is molded with a foam mold having at least one of the above characteristics. With such a configuration, it is possible to obtain a desired vacuum heat insulator using a foam molded article as a core material.
  • a vacuum heat insulating casing includes a foam molded product molded by a foam mold having at least one of the above characteristics. With such a configuration, it is possible to obtain a vacuum heat insulating housing having a complicated shape and to provide a vacuum heat insulating housing having high heat insulating performance.
  • a refrigerator according to an example of the present disclosure includes the vacuum heat insulating casing. With such a configuration, it is possible to provide a refrigerator with high heat insulation performance and energy saving.
  • FIG. 1 is a perspective view of a refrigerator including a vacuum heat insulating casing according to Embodiment 1 of the present disclosure.
  • FIG. 2 is a perspective view of the refrigerator door provided with the vacuum heat insulating casing in the first embodiment of the present disclosure.
  • FIG. 3 is a cross-sectional view of the refrigerating chamber door including the vacuum heat insulating casing according to the first embodiment of the present disclosure.
  • 4 is an enlarged cross-sectional view of a part A of FIG. 3 of the refrigerator compartment door according to the first embodiment of the present disclosure.
  • FIG. 5 is a component development view of the refrigerator compartment door according to the first embodiment of the present disclosure.
  • FIG. 6 is an enlarged cross-sectional view of part B of FIG.
  • FIG. 7 is a cross-sectional view of the vacuum heat insulator in the first embodiment of the present disclosure.
  • FIG. 8 is an enlarged cross-sectional view of a C part in FIG. 7 of the vacuum heat insulating body according to the first embodiment of the present disclosure.
  • FIG. 9 is a component development view of the vacuum heat insulating body according to the first embodiment of the present disclosure.
  • FIG. 10 is an enlarged cross-sectional view of a portion D in FIG. 9 of the vacuum heat insulating body according to the first embodiment of the present disclosure.
  • FIG. 11 is a perspective view of the core member and the reinforcing member of the vacuum heat insulating casing in the first embodiment of the present disclosure.
  • FIG. 12 is a perspective view of the core member and the suction member of the vacuum heat insulating casing according to the second embodiment of the present disclosure.
  • FIG. 13 is a diagram illustrating a relationship between the environmental temperature and the adsorption speed of the adsorption member arranged in the core material of the vacuum heat insulating casing in the second embodiment of the present disclosure.
  • FIG. 14 is a diagram for describing a configuration of a foam molding die of a core material of a vacuum heat insulating casing in the third embodiment of the present disclosure.
  • FIG. 15 is another diagram for explaining the configuration of the foam molding die of the core material of the vacuum heat insulating casing in the third embodiment of the present disclosure.
  • FIG. 16 is a development view of components of a conventional vacuum heat insulating casing.
  • FIG. 17 is a cross-sectional view of a conventional vacuum heat insulating housing.
  • FIG. 1 is a perspective view of a refrigerator provided with a vacuum heat insulating casing in the first embodiment of the present disclosure.
  • FIG. 2 is a perspective view of a refrigerator compartment door including a vacuum heat insulating casing in the first embodiment of the present disclosure.
  • FIG. 3 is sectional drawing of the refrigerator compartment door provided with the vacuum heat insulation housing
  • 4 is an enlarged cross-sectional view of a portion A of FIG. 3 of the refrigerator compartment door according to the first embodiment of the present disclosure
  • FIG. 5 is an exploded view of parts of the refrigerator compartment door according to the first embodiment of the present disclosure, and
  • FIG. FIG. 6 is an enlarged cross-sectional view of a portion B in FIG.
  • FIG. 7 is a cross-sectional view of the vacuum heat insulator in the first embodiment of the present disclosure
  • FIG. 8 is an enlarged cross-sectional view of a portion C of FIG. 7 of the vacuum heat insulator in the first embodiment of the present disclosure
  • FIG. It is a component expanded view of the vacuum heat insulating body in Embodiment 1 of this indication
  • FIG. 10 is an enlarged cross-sectional view of a D part of FIG. 9 of the vacuum heat insulating body in the first embodiment of the present disclosure, and FIG. It is a perspective view.
  • the refrigerator 1 in Embodiment 1 of this indication is the refrigerator main body 2, the refrigerator compartment door 3, the ice-making compartment door 4, the vegetable compartment door 5, and the freezer compartment door 6 which forms an external appearance.
  • the refrigerator compartment door 3 that is a vacuum heat insulating casing is composed of an outer plate 3 a, an inner plate 3 c, and a vacuum heat insulating body 3 b.
  • the refrigerator compartment door 3 includes an outer plate 3a, an inner plate 3c, and a vacuum heat insulating body 3b disposed in a space between the outer plate 3a and the inner plate 3c.
  • the refrigerator compartment door 3 includes a gasket 3d that seals the inside and the outside of the refrigerator 1 at the periphery.
  • the inner plate 3c of the refrigerator compartment door 3 includes an inner plate cabinet interior 15 and an inner plate outer peripheral portion 14 constituting the side portion of the refrigerator compartment door 3 which are integrally formed by injection molding. Has been.
  • the inner plate 3 c has an uneven thickness structure so that the thickness T ⁇ b> 2 of the outer peripheral portion that becomes the outside of the refrigerator compartment is larger than the thickness T ⁇ b> 1 inside the refrigerator that becomes the refrigerator compartment side.
  • the inner plate 3 c has a wall thickness T ⁇ b> 1 of the inner plate warehouse interior 15 on the inner side of the inner plate 3 c, with the recess 13 for fixing the anchor portion 12 of the gasket 3 d as a boundary.
  • the thickness T2 of the outer peripheral portion 14 of the inner plate that is outside the refrigerator compartment is increased.
  • the vacuum heat insulating body 3b of the refrigerator compartment door 3 which is a vacuum heat insulating casing, includes a core member 3bc and a reinforcing member 3bca.
  • the vacuum heat insulator 3b has a structure in which the inside is vacuum-sealed by a seal member 3ba and a base member 3bd.
  • the core material 3bc and the reinforcing member 3bca are integrally formed.
  • the reinforcing member 3bca disposed in the vacuum heat insulating body 3b is set in advance in the foaming mold before the open-cell urethane as the core material 3bc is foam-molded in the foaming mold.
  • foamed urethane is foam-molded, it is formed integrally with open-celled urethane.
  • a reinforcing member 3bca integrally foamed with open cell urethane and an adsorbing member 3bb are arranged on the core 3bc of the vacuum heat insulating body 3b.
  • the core member 3bc is provided with a suction member recess 3bcb and a reinforcing member position pin pin mark in a part thereof.
  • the reinforcing members 3bca are arranged in pairs on the left and right sides of the inner side of the inner plate 3c (see FIG. 5) in the longitudinal direction of the core member 3bc.
  • the reinforcing member 3bca is formed in a curved surface shape along the convex portion 10 (see FIG. 8 and FIG.
  • the flange portion 11 is formed by bending the end portion in the short direction of the reinforcing member 3bca. The flange portion 11 is arranged so as to extend from the end in the short direction of the reinforcing member 3bca into the core member 3bc so as to bite into the core member 3bc.
  • the core member 3bc in the vacuum heat insulating body 3b is formed with a plurality of suction member recesses 3bcb for housing the suction member 3bb on the outer plate 3a (see FIG. 5) side. ing.
  • the adsorbing member recess 3bcb is provided for positioning the adsorbing member 3bb during the vacuum sealing assembly operation of the vacuum heat insulating body 3b and for quantity control.
  • the core material 3bc is a reinforcing member for facilitating the positioning when the reinforcing member 3bca is set in the urethane foam mold during foam molding of the core material 3bc. It has a positioning pin mark 3bcc.
  • the reinforcing member 3bca is made of a material that is less changed by thermal contraction than the core material 3bc, for example, a metallic sheet metal.
  • the base member 3bd (see FIGS. 8 and 9) is formed by laminating different thermoplastic resins.
  • the sealing member 3ba is formed by laminating both surfaces of an aluminum foil with a resin film.
  • the “sledge phenomenon” of the refrigerator door 3 that is a vacuum heat insulating casing will be described.
  • the refrigerator compartment side of the refrigerator body 2 is shielded from the heat outside the refrigerator compartment, and the temperature of the refrigerator compartment is cooled to a predetermined temperature by temperature control of the refrigeration system.
  • the following explanation will be given by taking an example when the temperature is particularly high in summer.
  • the outside of the refrigerator compartment door 3 is thermally expanded by the outside air temperature of 30 to 40 ° C. in the environment outside the refrigerator compartment.
  • the room temperature inside the refrigerator compartment is controlled in the range of about 0 to 10 ° C., and the inside of the refrigerator compartment door 3 is thermally contracted.
  • produces a "sledge" acts on the refrigerator compartment door 3 so that the warehouse outer side may swell.
  • the inner plate 3c of the refrigerator compartment door 3 has a wall thickness T2 (see FIG. 4) at the outer peripheral portion that is the outside of the refrigerator compartment, rather than the wall thickness T1 (see FIG. 4) inside the refrigerator compartment.
  • Reference is configured to be large. That is, the inner plate 3c has an uneven thickness structure having portions with different thicknesses. Specifically, the inner plate 3c is located outside the refrigerating chamber from the thickness T1 of the inner plate interior 15 inside the inner plate 3c, with the recess 13 for fixing the anchor portion 12 of the gasket 3d as a boundary. It is comprised so that thickness T2 of the inner-plate outer peripheral part 14 may become large. With such a configuration, the thermal contraction inside the inner plate 3c can be reduced, and the thermal contraction generated inside and outside the refrigerator compartment can be alleviated, so that the warpage of the entire refrigerator compartment door 3 can be prevented.
  • the vacuum heat insulating body 3b of the refrigerator compartment door 3 which is a vacuum heat insulating casing, includes a core material 3bc and a reinforcing member 3bca inside.
  • the vacuum heat insulating body 3b has a structure in which the inside is vacuum-sealed by a seal member 3ba and a base member 3bd.
  • the reinforcing member 3bca is integrally formed with the open cell urethane simultaneously with the open cell urethane foaming. Therefore, the core material 3bc and the reinforcing member 3bca are integrally formed. With such a configuration, it is possible to further improve the bending rigidity of the vacuum heat insulating body 3b, and to suppress warpage of the entire refrigerator compartment door 3.
  • the reinforcing member 3bca is made of a material that is less likely to change due to thermal contraction than the core material 3bc, such as a metallic sheet metal. With such a configuration, the bending rigidity of the vacuum heat insulating body 3b can be improved more reliably, and the warpage of the entire refrigerator compartment door 3 can be suppressed.
  • the base member 3bd constituting the vacuum heat insulator 3b is formed by laminating different thermoplastic resins.
  • the base member 3bd has gas barrier properties such as water and air. With such a configuration, it can be formed into a free shape by vacuum forming or the like, and intrusion of gas such as water and air from the outside after vacuum sealing can be prevented, and the degree of vacuum can be maintained. Therefore, heat insulation performance can be maintained for a long time.
  • the sealing member 3ba constituting the vacuum heat insulating body 3b is laminated by laminating both surfaces of an ultrathin aluminum foil with a resin film.
  • the seal member 3ba has gas barrier properties such as water and air. With such a configuration, it is possible to prevent intrusion of gases such as water and air from the outside after vacuum sealing, and to maintain a degree of vacuum. Therefore, heat insulation performance can be maintained for a long time.
  • an adsorption member 3bb is accommodated in the vacuum heat insulator 3b.
  • adsorption member 3bb water and air generated inside the vacuum heat insulating housing or water and air entering from the outside can be adsorbed by the adsorbing member 3bb. Therefore, with such a configuration, after vacuum sealing, gas such as water and air generated from the inside of the vacuum heat insulating housing or water and air entering from the outside is adsorbed to the adsorbing member 3bb, and the degree of vacuum is deteriorated. Insulation performance can be maintained for a long time.
  • suction member recess 3bcb of the core member 3bc provided in the vacuum heat insulator 3b is provided for positioning and quantity control during the vacuum sealing assembly work of the vacuum heat insulator 3b.
  • the reinforcing member positioning pin mark 3bcc is for facilitating positioning when the reinforcing member 3bca is set in the urethane foam mold during foam molding of the core material 3bc.
  • the suction member recess 3bcb of the core member 3bc provided in the vacuum heat insulator 3b and the reinforcing member positioning pin mark 3bcc for facilitating positioning when the reinforcing member 3bca is set in the urethane foam mold are both provided.
  • the work efficiency during assembly can be improved.
  • the adsorbing member 3bb adsorbs water and air generated inside the vacuum heat insulating body 3b or water and air entering from the outside, the vacuum degree of the vacuum heat insulating body 3b can be maintained for a long period of time. Thermal insulation performance can be maintained for a long time.
  • the refrigerator compartment door 3 has been described as an example of the vacuum heat insulating casing.
  • the present invention is not limited thereto, and the ice making compartment door 4, the vegetable compartment door 5, the freezer compartment door 6, and the like. It can also be applied to.
  • FIG. 12 is a perspective view of a core member and a suction member that constitute a vacuum heat insulating body of a vacuum heat insulating casing according to the second embodiment of the present disclosure.
  • FIG. 13 is a graph showing a relationship between the environmental temperature and the adsorption speed of the adsorption member arranged in the vacuum insulation body of the vacuum insulation case according to the second embodiment of the present disclosure.
  • the same structure as Embodiment 1 of this indication attaches
  • the adsorbing member 3bb is arranged on the outer plate 3a side (high temperature side) (see FIG. 5) in the vacuum heat insulating body 3b.
  • suction member recesses 3bcb for housing the suction member 3bb are provided at a plurality of locations on the outer plate 3a side (high temperature side) of the core 3bc in the vacuum heat insulator 3b.
  • the adsorbing member recess 3bcb is provided for positioning the adsorbing member 3bb at the time of vacuum sealing assembly work of the vacuum heat insulating body 3b and for quantity control.
  • the core material 3bc is formed of an open cell urethane foam which is a porous structure.
  • the suction member recess 3bcb for housing the suction member 3bb is formed simultaneously with the foaming of the open cell urethane.
  • the adsorbing member 3bb adsorbs water and air generated inside the vacuum heat insulating body 3b or water and air entering from the outside.
  • the adsorption member 3bb disposed on the core material 3bc in the vacuum heat insulating body 3b is disposed on the outer plate 3a side (high temperature side) of the core material 3bc.
  • the adsorption speed can be increased from the adsorption speed of the adsorption member 3bb and the environmental temperature characteristics. Therefore, with such a configuration, the degree of vacuum in the vacuum heat insulating body 3b can be maintained for a long time in a state where the refrigerator is assembled and the refrigerator is operated. Thereby, the reliability of a refrigerator can be improved.
  • the core material 3bc is formed of an open cell urethane foam which is a porous structure. Further, when the core material 3bc is formed, the suction member recess 3bcb for housing the suction member 3bb is formed simultaneously with the foaming of the open cell urethane. With such a configuration, the adsorbing member 3bb can be easily arranged, and a shortage during the assembly process can be prevented.
  • suction member 3bb is accommodated in the suction member recess 3bcb.
  • the adsorbing member 3bb adsorbs water and air generated inside the vacuum heat insulating body 3b or water and air entering from the outside. Therefore, with such a configuration, the degree of vacuum in the vacuum insulator 3b can be maintained for a long time, and the heat insulating performance can also be maintained for a long time.
  • FIG. 14 is a diagram for describing a configuration of a foam molding die of a core material of a vacuum heat insulating casing in the third embodiment of the present disclosure.
  • FIG. 15 is a diagram for describing a configuration of a foam molding die of a core material of a vacuum heat insulating casing in the third embodiment of the present disclosure. Note that the same configurations as those of the first and second embodiments of the present disclosure are denoted by the same reference numerals, and detailed description thereof is omitted.
  • open-cell foaming mold 7 of open-cell foamed urethane will be described.
  • an open-cell foamed mold 7 of open-cell foamed urethane is composed of a foam-molded upper mold 7a and a foam-molded lower mold 7b, and has a vertically divided mold structure.
  • each of the foam-molded upper mold 7a and the foam-molded lower mold 7b has a structure further divided into a plurality of parts. Specifically, a portion where the adsorbing member recess 3bcb (see FIGS. 9 and 12) of the foam molding upper mold 7a is formed as a dividing line between the foam molding upper mold 7a and the upper surface split mold 7ab.
  • the foam-molded lower mold 7b has a lower surface divided mold 7ba (four surfaces) in which each side portion is divided.
  • the part corresponding to the corner of the core material 3bc (see FIGS. 7 and 11) of the lower surface split mold 7ba of the foam molded lower mold 7b is a diagonal (slanted) split line (with the foam molded lower mold 7ba). It is said.
  • the foam-molded upper mold 7a has a structure divided into a plurality of parts. With such a configuration, the gas generated during the foam molding of open-cell urethane can be easily removed, so that a foam molded product can be molded in which the surface shape of the molded product does not have a lack of gas due to poor gas escape.
  • the foam molded lower mold 7b has a structure divided into a plurality of parts. With such a configuration, the gas generated during the foam molding of open-cell urethane can be easily removed, so that a foam molded product in which the surface shape of the molded product does not have a lack of gas due to poor gas escape can be formed.
  • the surface of the molded product after the molding of open-cell urethane is made easy to escape the gas generated during the foam-molding of open-celled urethane by the mold division structure. Therefore, with such a configuration, it is possible to generate burrs in the divided portion of the degassing trace. With such a configuration, it is possible to mold a foam molded product in which the surface shape of the molded product is free from lacking due to poor gas escape.
  • the present disclosure provides a vacuum heat insulating casing that can suppress warping deformation of the vacuum heat insulating casing for a long period of time even if a temperature difference occurs between the inner and outer surfaces of the vacuum heat insulating casing while improving the heat insulating performance.
  • the present disclosure can be applied not only to refrigerators but also to heat insulating structures such as automobiles, heat pump water heaters, electric water heaters, rice cookers, bathtubs, and outer walls and roofs of houses.

Abstract

This vacuum heat insulation case is provided with an outer panel, an inner panel, and a vacuum heat insulation body (3b) that is arranged inside the outer panel and the inner panel. The vacuum heat insulation body (3b) is internally provided with a core material (3bc) and a reinforcing member (3bca). The inside of the vacuum heat insulation body (3b) is vacuum sealed by means of a sealing member (3ba) and a base member (3bd).

Description

真空断熱筐体、およびこれを用いた冷蔵庫Vacuum insulation casing and refrigerator using the same
　本開示は、冷蔵庫などに用いられる真空断熱筐体、および、これを用いた冷蔵庫、並びに、真空断熱筐体に用いられる芯材を発泡成形するための発泡成形金型に関する。 The present disclosure relates to a vacuum heat insulation casing used for a refrigerator, a refrigerator using the same, and a foam molding die for foaming a core material used for the vacuum heat insulation casing.
　近年、地球環境問題である温暖化の対策として省エネルギ化を推進する動きが活発化し、断熱技術の性能進化が期待されている。従来、この種の断熱技術として、図１６および図１７に示されるように、扉枠体３０の内部の空間に設けられた真空断熱パネル３４と、扉枠体３０側面に接して設けられた補強部材３５とを有する構造が提案されている。このような構造により、断熱性能を向上させている。なお、真空断熱パネルとは、板形状の容器内を真空にすることで断熱性能を向上させた構造のことをいう（例えば、特許文献１参照）。 In recent years, the movement to promote energy saving as a countermeasure for global warming, which is a global environmental problem, has been activated, and the performance of thermal insulation technology is expected to evolve. Conventionally, as this type of heat insulation technology, as shown in FIGS. 16 and 17, a vacuum heat insulation panel 34 provided in a space inside the door frame body 30 and a reinforcement provided in contact with the side surface of the door frame body 30. A structure having a member 35 has been proposed. With such a structure, the heat insulation performance is improved. In addition, a vacuum heat insulation panel means the structure which improved the heat insulation performance by making the inside of a plate-shaped container into a vacuum (for example, refer patent document 1).
　しかしながら、上記のような従来の構成では、扉枠体３０は、内部の空間に真空断熱パネル３４と、扉枠体３０側面に接して設けられた補強部材３５とにより構成されており、補強部材３５は、真空断熱パネル３４から独立した別の構成要素となっている。また、補強部材３５の近傍の断熱性能は、真空断熱パネル３４の断熱性能と異なっている。このため、上記のような従来の構成では、断熱性能の悪化および冷蔵庫内外温度差による扉枠体３０にそりが発生するという課題がある。 However, in the conventional configuration as described above, the door frame 30 is configured by the vacuum heat insulation panel 34 and the reinforcing member 35 provided in contact with the side surface of the door frame 30 in the internal space. Reference numeral 35 denotes another component independent of the vacuum heat insulation panel 34. Further, the heat insulating performance in the vicinity of the reinforcing member 35 is different from the heat insulating performance of the vacuum heat insulating panel 34. For this reason, in the conventional structure as described above, there is a problem that the door frame 30 is warped due to the deterioration of the heat insulating performance and the temperature difference between the inside and outside of the refrigerator.
　また、従来の技術においては、扉枠体３０の内部の空間に、真空断熱パネル３４、および、扉枠体３０側面に接して設けられた補強部材３５を有した構造は開示されているが、真空断熱パネル３４内部に発生する空気、水およびガス、あるいは、外部から浸入する空気、水およびガスに対する配慮はない。このため、真空断熱パネル３４の内部の真空度を長期に保つことができないので、断熱性能も悪化するという課題がある。 In the prior art, a structure having a vacuum heat insulating panel 34 and a reinforcing member 35 provided in contact with the side surface of the door frame body 30 in the space inside the door frame body 30 is disclosed. There is no consideration for air, water and gas generated inside the vacuum heat insulating panel 34 or air, water and gas entering from the outside. For this reason, since the vacuum degree inside the vacuum heat insulation panel 34 cannot be maintained for a long time, there is a problem that the heat insulation performance is also deteriorated.
　また、上記のような従来の構成においては、扉枠体３０の内部の断熱空間に、平板形状の真空断熱パネル３４と、断熱部材３７とが組合わされて配置されている。このような構成においては、真空断熱パネル３４と、断熱部材３７とは、互いに独立した構成要素となっているため、断熱性能も悪化するという課題がある。 In the conventional configuration as described above, the flat vacuum heat insulation panel 34 and the heat insulation member 37 are combined in the heat insulation space inside the door frame 30. In such a configuration, since the vacuum heat insulation panel 34 and the heat insulation member 37 are independent components, there is a problem that the heat insulation performance is also deteriorated.
特開２０１３－１１９９６６号公報JP 2013-119966 A
　本開示は、上記のような従来の課題に鑑みてなされたもので、断熱性能の向上と、内外温度差により生じるそり変形などの剛性の向上とを両立できる、真空断熱筐体（例えば扉体）を提供する。 The present disclosure has been made in view of the conventional problems as described above, and is a vacuum heat insulating casing (for example, a door body) that can achieve both improvement in heat insulation performance and improvement in rigidity such as warpage deformation caused by a difference in internal and external temperatures. )I will provide a.
　具体的には、本開示の一例による真空断熱筐体は、外板と、内板と、外板および内板の間に配置された真空断熱体とを備える。本開示の一例による真空断熱体は、内部に芯材と補強部材とを有し、シール部材とベース部材とで内部が真空密閉されている。 Specifically, a vacuum heat insulating casing according to an example of the present disclosure includes an outer plate, an inner plate, and a vacuum heat insulating body disposed between the outer plate and the inner plate. A vacuum heat insulator according to an example of the present disclosure includes a core material and a reinforcing member inside, and the inside is vacuum-sealed by a seal member and a base member.
　このような構成により、断熱性能を高めながら、芯材と補強部材とを内部に有する真空断熱体により、真空断熱筐体の内外面に温度差が生じても、真空断熱筐体のそり変形を長期間抑制することができる。 With such a configuration, the vacuum insulation body having the core material and the reinforcing member inside improves the heat insulation performance, and even if a temperature difference occurs between the inner and outer surfaces of the vacuum insulation case, the vacuum insulation case is warped. It can be suppressed for a long time.
　また、本開示の一例による真空断熱筐体において、芯材と補強部材とが一体構成されていてもよい。このような構成により、補強部材は、芯材の連続気泡ウレタンフォームと一体で成形されることで曲げ剛性が向上するので、真空断熱筐体の内外面の環境温度の違いによる熱収縮で発生するそり変形をさらに抑制することができる。 Further, in the vacuum heat insulating casing according to an example of the present disclosure, the core member and the reinforcing member may be integrally configured. With such a configuration, the reinforcing member is formed integrally with the core open-cell urethane foam, so that the bending rigidity is improved. Therefore, the reinforcing member is generated due to thermal contraction due to the difference in environmental temperature between the inner and outer surfaces of the vacuum heat insulating casing. Warpage deformation can be further suppressed.
　また、本開示の一例による真空断熱筐体において、補強部材には、芯材よりも熱収縮による変化の少ない材料が用いられていてもよい。このような構成により、補強部材は、芯材の連続気泡ウレタンフォームよりも熱収縮による変化の少ない材料で構成されるので、真空断熱筐体の内外面の環境温度の違いによる熱収縮で発生するそり変形を確実に抑制することができる。 Further, in the vacuum heat insulating casing according to an example of the present disclosure, a material that is less changed by thermal contraction than the core material may be used for the reinforcing member. With such a configuration, the reinforcing member is made of a material that has less change due to thermal shrinkage than the open-cell urethane foam of the core material, and thus occurs due to thermal shrinkage due to the environmental temperature difference between the inner and outer surfaces of the vacuum heat insulating casing. Warpage deformation can be reliably suppressed.
　また、本開示の一例による真空断熱筐体は、外板と、内板と、外板および内板の間に配置された真空断熱体とを備える。真空断熱体は、内部に芯材を有する。真空断熱体は、シール部材とベース部材とにより、内部が真空密閉されて構成されている。また、内板は、庫内部の肉厚より外周部の肉厚が大きくなるよう構成されている。このような構成により、真空断熱筐体の内外面の環境温度の違いによる熱収縮で発生するそり変形を内板の肉厚設定により抑制することができる。 Further, a vacuum heat insulating casing according to an example of the present disclosure includes an outer plate, an inner plate, and a vacuum heat insulating body disposed between the outer plate and the inner plate. A vacuum heat insulating body has a core material inside. The vacuum heat insulator is configured such that the inside is vacuum-sealed by a seal member and a base member. Further, the inner plate is configured so that the thickness of the outer peripheral portion is larger than the thickness of the inside of the warehouse. With such a configuration, it is possible to suppress warpage deformation caused by thermal shrinkage due to a difference in environmental temperature between the inner and outer surfaces of the vacuum heat insulating housing by setting the thickness of the inner plate.
　また、本開示の一例による真空断熱筐体は、ベース部材は、異材質の熱可塑性樹脂が積層されて形成されていてもよい。このような構成により、真空成形などで自由な形状に形成することができる。また、このような構成により、真空封止後の外部からの水および空気などのガスの浸入を防止でき、真空度を保てるので、断熱性能も長期に保つことができる。 Further, in the vacuum heat insulating casing according to an example of the present disclosure, the base member may be formed by laminating different thermoplastic resins. With such a configuration, it can be formed into a free shape by vacuum forming or the like. Further, with such a configuration, it is possible to prevent intrusion of gas such as water and air from the outside after vacuum sealing, and the degree of vacuum can be maintained, so that the heat insulating performance can be maintained for a long time.
　また、本開示の一例による真空断熱筐体において、シール部材は、アルミ箔の両面が、樹脂フィルムでラミネートされて積層されて構成されていてもよい。このような構成により、真空封止後の外部からの水および空気などのガスの浸入を防止でき、真空度を保てるので、断熱性能も長期に保つことができる。 Further, in the vacuum heat insulating casing according to an example of the present disclosure, the sealing member may be configured by laminating both surfaces of an aluminum foil with a resin film. With such a configuration, intrusion of gas such as water and air from the outside after vacuum sealing can be prevented and the degree of vacuum can be maintained, so that the heat insulation performance can be maintained for a long time.
　また、本開示の一例による真空断熱筐体は、上記特徴の少なくとも一つを有する形態において、真空断熱体の内部に吸着部材を備えていてもよい。このような構成により、真空封止後に内部から発生する水および空気などのガス、並びに、外部から浸入した水および空気などのガスを、吸着部材に吸着させることができるので、真空度を悪化させないので、断熱性能も長期に保つことができる。 Further, the vacuum heat insulating casing according to an example of the present disclosure may include an adsorption member inside the vacuum heat insulating body in a form having at least one of the above characteristics. With such a configuration, water such as water and air generated from the inside after vacuum sealing, and gas such as water and air that has entered from the outside can be adsorbed to the adsorption member, so that the degree of vacuum is not deteriorated. Therefore, heat insulation performance can be maintained for a long time.
　また、本開示の一例による冷蔵庫は、上述した特徴を少なくとも一つ有する真空断熱筐体を備える。このような構成により、断熱性能を長期に保つことができるとともに、外観変形が抑制された、信頼性の高い冷蔵庫を提供することができる。 In addition, a refrigerator according to an example of the present disclosure includes a vacuum heat insulating casing having at least one of the above-described features. With such a configuration, it is possible to provide a highly reliable refrigerator in which the heat insulating performance can be maintained for a long time and the external appearance deformation is suppressed.
　また、本開示は、生産性の向上、および、断熱性能を長期に保つことができる、真空断熱筐体を提供する。 Also, the present disclosure provides a vacuum heat insulating casing that can improve productivity and maintain heat insulating performance for a long period of time.
　具体的には、本開示の一例による真空断熱筐体は、外板と、内板と、外板および内板の内部に配置された真空断熱体とを備える。真空断熱体は、内部に芯材と吸着部材とを有する。吸着部材は、真空断熱体の高温側に配置されている。真空断熱体は、シール部材とベース部材とにより内部が真空密閉されている。 Specifically, a vacuum heat insulating housing according to an example of the present disclosure includes an outer plate, an inner plate, and a vacuum heat insulating member disposed inside the outer plate and the inner plate. A vacuum heat insulating body has a core material and an adsorption member inside. The adsorption member is disposed on the high temperature side of the vacuum heat insulator. The vacuum heat insulating body is hermetically sealed with a seal member and a base member.
　このような構成により、真空断熱体内の芯材に配置された吸着部材は、芯材の外板側（高温側）に配置されているので、真空断熱筐体（例えば扉体）は、吸着部材の吸着速度および環境温度特性から、吸着速度を速くできる。このような構成により、冷蔵庫が組み立てられて、冷蔵庫が運転された状態で、真空断熱体内の真空度を長期に亘って維持することができる。また、このように構成された真空断熱筐体を備えることにより、信頼性の高い冷蔵庫を提供することができる。 With such a configuration, the suction member disposed on the core material in the vacuum heat insulating body is disposed on the outer plate side (high temperature side) of the core material. The adsorption rate can be increased from the adsorption rate and environmental temperature characteristics. With such a configuration, the degree of vacuum in the vacuum heat insulating body can be maintained over a long period of time while the refrigerator is assembled and the refrigerator is operated. Moreover, a highly reliable refrigerator can be provided by providing the vacuum heat insulation housing | casing comprised in this way.
　また、本開示の一例による真空断熱筐体において、芯材は、多孔性構造体である連続気泡ウレタンフォームで形成されていてもよい。また、芯材は、吸着部材が配置される吸着部材凹部を有していてもよい。このような構成により、吸着部材を容易に配置できるとともに、組立工程時の欠品を防止することができる。 Further, in the vacuum heat insulating casing according to an example of the present disclosure, the core material may be formed of an open-cell urethane foam that is a porous structure. The core material may have a suction member recess in which the suction member is disposed. With such a configuration, the adsorbing member can be easily arranged, and a shortage during the assembly process can be prevented.
　また、本開示の一例による真空断熱筐体において、吸着部材は、真空断熱筐体の内部に発生する水、空気およびガス、並びに、外部から浸入する水、空気およびガスを吸着するよう構成されていてもよい。このような構成により、真空断熱体内の真空度を長期に保つことができ、断熱性能も長期に保つことができる。 Further, in the vacuum heat insulating housing according to an example of the present disclosure, the adsorption member is configured to adsorb water, air, and gas generated inside the vacuum heat insulating housing, and water, air, and gas entering from outside. May be. With such a configuration, the degree of vacuum in the vacuum heat insulating body can be maintained for a long time, and the heat insulating performance can also be maintained for a long time.
　また、本開示の一例による冷蔵庫は、上記の真空断熱体に係る特徴のうち少なくともいずれか１つを有する真空断熱筐体を備える。このような構成により、生産性が向上されるとともに、断熱性能を長期に亘り確保することができる信頼性の高い冷蔵庫を提供することができる。 In addition, a refrigerator according to an example of the present disclosure includes a vacuum heat insulating housing having at least one of the characteristics related to the vacuum heat insulating body. With such a configuration, it is possible to provide a highly reliable refrigerator capable of improving productivity and ensuring heat insulation performance over a long period of time.
　また、本開示は、真空断熱筐体内部の空間全てが、連続気泡発泡ウレタンで効率的に一体発泡成形されるよう構成された、真空断熱筐体製造用の発泡成形金型を提供する。 Also, the present disclosure provides a foam mold for manufacturing a vacuum heat insulation casing, in which the entire space inside the vacuum heat insulation casing is configured to be integrally integrally formed with open cell foamed urethane.
　具体的には、本開示の一例による発泡成形金型は、連続気泡発泡ウレタンの発泡成形金型であって、発泡成形金型は、本体部と、蓋体部とを備える。本体部および蓋体部は、開閉自在に構成され、発泡成形品の本体部と蓋体部との合わせ面は、ガス抜き構造を有する。 Specifically, the foam mold according to an example of the present disclosure is an open-cell foamed urethane foam mold, and the foam mold includes a main body portion and a lid portion. The main body portion and the lid body portion are configured to be openable and closable, and the mating surface between the main body portion and the lid body portion of the foam molded product has a gas venting structure.
　このような構成により、連続気泡ウレタンフォームが発泡する時に発生するガスを抜け易くでき、外観形状不具合もない連続気泡ウレタンフォーム発泡成形品を確保することができる。よって、このような構成により、優れた真空断熱筐体を提供することができる。 With such a configuration, it is possible to easily remove the gas generated when the open-cell urethane foam is foamed, and it is possible to secure an open-cell urethane foam foam-molded product free from defects in appearance. Therefore, such a configuration can provide an excellent vacuum heat insulating casing.
　また、本開示の一例による発泡成形金型において、本体部は、分割金型で構成されていてもよい。この場合、分割金型の合わせ面は、ガス抜き構造を有していてもよい。このような構成により、連続気泡ウレタンフォームが発泡する時に発生するガスをさらに抜け易くでき、外観形状の不具合もなく連続気泡発泡ウレタンの発泡成形品を形成することができる。 Further, in the foam molding die according to an example of the present disclosure, the main body portion may be constituted by a split die. In this case, the mating surface of the split mold may have a gas venting structure. With such a configuration, the gas generated when the open-cell urethane foam is foamed can be more easily removed, and an open-cell foamed molded product of open-cell foamed urethane can be formed without defects in the external shape.
　また、本開示の一例による発泡成形金型において、蓋体部は、分割金型で構成されていてもよい。この場合、分割金型の合わせ面は、ガス抜き構造を有していてもよい。このような構成により、連続気泡ウレタンフォームが発泡する時に発生するガスをさらに抜け易くでき、外観形状の不具合もなく連続気泡発泡ウレタンの発泡成形品を形成することができる。 Further, in the foam molding die according to an example of the present disclosure, the lid portion may be configured by a split die. In this case, the mating surface of the split mold may have a gas venting structure. With such a configuration, the gas generated when the open-cell urethane foam is foamed can be more easily removed, and an open-cell foamed molded product of open-cell foamed urethane can be formed without defects in the external shape.
　また、本開示の一例による発泡成形品は、上記の特徴を少なくとも一つ有する発泡成形金型で成形されている。このような構成により、発泡成形品を芯材とした所望の真空断熱体を得ることができる。 In addition, a foam molded article according to an example of the present disclosure is molded with a foam mold having at least one of the above characteristics. With such a configuration, it is possible to obtain a desired vacuum heat insulator using a foam molded article as a core material.
　また、本開示の一例による真空断熱筐体は、上記の特徴を少なくとも一つ有する発泡成形金型により成型された発泡成形品を備えている。このような構成により、複雑な形状の真空断熱筐体を得ることができるとともに、断熱性能の高い真空断熱筐体を提供することができる。 In addition, a vacuum heat insulating casing according to an example of the present disclosure includes a foam molded product molded by a foam mold having at least one of the above characteristics. With such a configuration, it is possible to obtain a vacuum heat insulating housing having a complicated shape and to provide a vacuum heat insulating housing having high heat insulating performance.
　また、本開示の一例による冷蔵庫は、上記の真空断熱筐体を備えている。このような構成により、断熱性能の高い、省エネルギが可能な冷蔵庫を提供することができる。 Further, a refrigerator according to an example of the present disclosure includes the vacuum heat insulating casing. With such a configuration, it is possible to provide a refrigerator with high heat insulation performance and energy saving.
図１は、本開示の実施の形態１における真空断熱筐体を備えた冷蔵庫の斜視図である。FIG. 1 is a perspective view of a refrigerator including a vacuum heat insulating casing according to Embodiment 1 of the present disclosure. 図２は、本開示の実施の形態１における真空断熱筐体を備えた冷蔵室扉の斜視図である。FIG. 2 is a perspective view of the refrigerator door provided with the vacuum heat insulating casing in the first embodiment of the present disclosure. 図３は、本開示の実施の形態１における真空断熱筐体を備えた冷蔵室扉の断面図である。FIG. 3 is a cross-sectional view of the refrigerating chamber door including the vacuum heat insulating casing according to the first embodiment of the present disclosure. 図４は、本開示の実施の形態１における冷蔵室扉の図３のＡ部拡大断面図である。4 is an enlarged cross-sectional view of a part A of FIG. 3 of the refrigerator compartment door according to the first embodiment of the present disclosure. 図５は、本開示の実施の形態１における冷蔵室扉の部品展開図である。FIG. 5 is a component development view of the refrigerator compartment door according to the first embodiment of the present disclosure. 図６は、本開示の実施の形態１における冷蔵室扉の図５のＢ部拡大断面図である。FIG. 6 is an enlarged cross-sectional view of part B of FIG. 5 of the refrigerator compartment door according to the first embodiment of the present disclosure. 図７は、本開示の実施の形態１における真空断熱体の断面図である。FIG. 7 is a cross-sectional view of the vacuum heat insulator in the first embodiment of the present disclosure. 図８は、本開示の実施の形態１における真空断熱体の図７のＣ部拡大断面図である。FIG. 8 is an enlarged cross-sectional view of a C part in FIG. 7 of the vacuum heat insulating body according to the first embodiment of the present disclosure. 図９は、本開示の実施の形態１における真空断熱体の部品展開図である。FIG. 9 is a component development view of the vacuum heat insulating body according to the first embodiment of the present disclosure. 図１０は、本開示の実施の形態１における真空断熱体の図９のＤ部拡大断面図である。FIG. 10 is an enlarged cross-sectional view of a portion D in FIG. 9 of the vacuum heat insulating body according to the first embodiment of the present disclosure. 図１１は、本開示の実施の形態１における真空断熱筐体の芯材および補強部材の斜視図である。FIG. 11 is a perspective view of the core member and the reinforcing member of the vacuum heat insulating casing in the first embodiment of the present disclosure. 図１２は、本開示の実施の形態２における真空断熱筐体の芯材および吸着部材の斜視図である。FIG. 12 is a perspective view of the core member and the suction member of the vacuum heat insulating casing according to the second embodiment of the present disclosure. 図１３は、本開示の実施の形態２における真空断熱筐体の芯材に配置された吸着部材の環境温度と吸着速度との関係を示す図である。FIG. 13 is a diagram illustrating a relationship between the environmental temperature and the adsorption speed of the adsorption member arranged in the core material of the vacuum heat insulating casing in the second embodiment of the present disclosure. 図１４は、本開示の実施の形態３における真空断熱筐体の芯材の発泡成形型の構成を説明するための図である。FIG. 14 is a diagram for describing a configuration of a foam molding die of a core material of a vacuum heat insulating casing in the third embodiment of the present disclosure. 図１５は、本開示の実施の形態３における真空断熱筐体の芯材の発泡成形型の構成を説明するための別の図である。FIG. 15 is another diagram for explaining the configuration of the foam molding die of the core material of the vacuum heat insulating casing in the third embodiment of the present disclosure. 図１６は、従来の真空断熱筐体の部品展開図である。FIG. 16 is a development view of components of a conventional vacuum heat insulating casing. 図１７は、従来の真空断熱筐体の断面図である。FIG. 17 is a cross-sectional view of a conventional vacuum heat insulating housing.
　以下、本開示の実施の形態について、図面を参照しながら説明する。なお、全ての図面において、同一又は相当部分には同一符号を付し、重複する説明は省略する場合がある。また、全ての図面おいて、本開示を説明するための構成要素を抜粋して図示しており、その他の構成要素については図示を省略する場合がある。さらに、以下の実施の形態によって本開示が限定されるものではない。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In all the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description may be omitted. In addition, in all the drawings, components for explaining the present disclosure are extracted and illustrated, and illustration of other components may be omitted. Furthermore, the present disclosure is not limited to the following embodiments.
　（実施の形態１）
　図１は、本開示の実施の形態１における真空断熱筐体を備えた冷蔵庫の斜視図、図２は、本開示の実施の形態１における真空断熱筐体を備えた冷蔵室扉の斜視図、および、図３は、本開示の実施の形態１における真空断熱筐体を備えた冷蔵室扉の断面図である。図４は、本開示の実施の形態１における冷蔵室扉の図３のＡ部拡大断面図、図５は、本開示の実施の形態１における冷蔵室扉の部品展開図、および、図６は、本開示の実施の形態１における冷蔵室扉の図５のＢ部拡大断面図である。図７は、本開示の実施の形態１における真空断熱体の断面図、図８は、本開示の実施の形態１における真空断熱体の図７のＣ部拡大断面図、および、図９は、本開示の実施の形態１における真空断熱体の部品展開図である。図１０は、本開示の実施の形態１における真空断熱体の図９のＤ部拡大断面図であり、図１１は、本開示の実施の形態１における真空断熱筐体の芯材および補強部材の斜視図である。 (Embodiment 1)
FIG. 1 is a perspective view of a refrigerator provided with a vacuum heat insulating casing in the first embodiment of the present disclosure. FIG. 2 is a perspective view of a refrigerator compartment door including a vacuum heat insulating casing in the first embodiment of the present disclosure. And FIG. 3 is sectional drawing of the refrigerator compartment door provided with the vacuum heat insulation housing | casing in Embodiment 1 of this indication. 4 is an enlarged cross-sectional view of a portion A of FIG. 3 of the refrigerator compartment door according to the first embodiment of the present disclosure, FIG. 5 is an exploded view of parts of the refrigerator compartment door according to the first embodiment of the present disclosure, and FIG. FIG. 6 is an enlarged cross-sectional view of a portion B in FIG. 5 of the refrigerator compartment door according to the first embodiment of the present disclosure. FIG. 7 is a cross-sectional view of the vacuum heat insulator in the first embodiment of the present disclosure, FIG. 8 is an enlarged cross-sectional view of a portion C of FIG. 7 of the vacuum heat insulator in the first embodiment of the present disclosure, and FIG. It is a component expanded view of the vacuum heat insulating body in Embodiment 1 of this indication. FIG. 10 is an enlarged cross-sectional view of a D part of FIG. 9 of the vacuum heat insulating body in the first embodiment of the present disclosure, and FIG. It is a perspective view.
　図１に示すように、本開示の実施の形態１における冷蔵庫１は、外観を形成する冷蔵庫本体２と、冷蔵室扉３と、製氷室扉４と、野菜室扉５と、冷凍室扉６とを備える。図２および図３に示すように、真空断熱筐体である冷蔵室扉３は、外板３ａと、内板３ｃと、真空断熱体３ｂとで構成されている。 As shown in FIG. 1, the refrigerator 1 in Embodiment 1 of this indication is the refrigerator main body 2, the refrigerator compartment door 3, the ice-making compartment door 4, the vegetable compartment door 5, and the freezer compartment door 6 which forms an external appearance. With. As shown in FIG. 2 and FIG. 3, the refrigerator compartment door 3 that is a vacuum heat insulating casing is composed of an outer plate 3 a, an inner plate 3 c, and a vacuum heat insulating body 3 b.
　次に、真空断熱筐体である冷蔵室扉３の構成について、より詳細に説明する。 Next, the configuration of the refrigerator compartment door 3 that is a vacuum heat insulating casing will be described in more detail.
　図３から図５において、冷蔵室扉３は、外板３ａと、内板３ｃと、外板３ａおよび内板３ｃの間の空間に配置された真空断熱体３ｂとを備えている。冷蔵室扉３は、その周縁に、冷蔵庫１の庫内と庫外とをシールするガスケット３ｄを備えている。 3 to 5, the refrigerator compartment door 3 includes an outer plate 3a, an inner plate 3c, and a vacuum heat insulating body 3b disposed in a space between the outer plate 3a and the inner plate 3c. The refrigerator compartment door 3 includes a gasket 3d that seals the inside and the outside of the refrigerator 1 at the periphery.
　また、図６に示すように、冷蔵室扉３の内板３ｃは、内板庫内部１５と、冷蔵室扉３の側部を構成する内板外周部１４とが、インジェクション成形で一体に構成されている。 Moreover, as shown in FIG. 6, the inner plate 3c of the refrigerator compartment door 3 includes an inner plate cabinet interior 15 and an inner plate outer peripheral portion 14 constituting the side portion of the refrigerator compartment door 3 which are integrally formed by injection molding. Has been.
　内板３ｃは、図６に示すように、冷蔵室内側となる庫内部の肉厚Ｔ１より、冷蔵室外側となる外周部の肉厚Ｔ２が大きくなるように、偏肉構造を有する。具体的には、内板３ｃは、図６に示すように、ガスケット３ｄのアンカー部１２を固定するための凹部１３を境に、内板３ｃの庫内側の内板庫内部１５の肉厚Ｔ１より、冷蔵室外側となる内板外周部１４の肉厚Ｔ２が大きくなるよう、構成されている。 As shown in FIG. 6, the inner plate 3 c has an uneven thickness structure so that the thickness T <b> 2 of the outer peripheral portion that becomes the outside of the refrigerator compartment is larger than the thickness T <b> 1 inside the refrigerator that becomes the refrigerator compartment side. Specifically, as shown in FIG. 6, the inner plate 3 c has a wall thickness T <b> 1 of the inner plate warehouse interior 15 on the inner side of the inner plate 3 c, with the recess 13 for fixing the anchor portion 12 of the gasket 3 d as a boundary. Thus, the thickness T2 of the outer peripheral portion 14 of the inner plate that is outside the refrigerator compartment is increased.
　図７および図８に示すように、真空断熱筐体である冷蔵室扉３の真空断熱体３ｂは、内部に芯材３ｂｃと補強部材３ｂｃａとを備える。真空断熱体３ｂは、シール部材３ｂａとベース部材３ｂｄとで内部が真空密閉された構造を有する。 As shown in FIGS. 7 and 8, the vacuum heat insulating body 3b of the refrigerator compartment door 3, which is a vacuum heat insulating casing, includes a core member 3bc and a reinforcing member 3bca. The vacuum heat insulator 3b has a structure in which the inside is vacuum-sealed by a seal member 3ba and a base member 3bd.
　芯材３ｂｃと補強部材３ｂｃａとは、一体に構成されている。具体的には、真空断熱体３ｂ内に配置されている補強部材３ｂｃａは、芯材３ｂｃである連続気泡ウレタンを発泡金型内で発泡成形する前に、予め発泡金型内にセットされ、連続気泡ウレタンが発泡成形されるときに、連続気泡ウレタンと一体で形成される。 The core material 3bc and the reinforcing member 3bca are integrally formed. Specifically, the reinforcing member 3bca disposed in the vacuum heat insulating body 3b is set in advance in the foaming mold before the open-cell urethane as the core material 3bc is foam-molded in the foaming mold. When foamed urethane is foam-molded, it is formed integrally with open-celled urethane.
　図７および図９から図１１に示すように、真空断熱体３ｂの芯材３ｂｃには、連続気泡ウレタンと一体発泡成形された補強部材３ｂｃａと、吸着部材３ｂｂとが配置されている。芯材３ｂｃは、その一部分に、吸着部材凹部３ｂｃｂと、補強部材位置きめピン跡とが設けられている。具体的には、補強部材３ｂｃａは、芯材３ｂｃの長手方向における、内板３ｃ（図５参照）側である庫内側の左右に、一対で配置されている。補強部材３ｂｃａは、芯材３ｂｃの庫内側の平面部から凸部１０（図８および図１０参照）に沿った曲面状に形成されている。また、補強部材３ｂｃａの短手方向の端部には、フランジ部１１が折り曲げて形成されている。フランジ部１１は、芯材３ｂｃの内部に食い込むように、補強部材３ｂｃａの短手方向の端部から芯材３ｂｃの内部に延出して配置されている。 As shown in FIGS. 7 and 9 to 11, a reinforcing member 3bca integrally foamed with open cell urethane and an adsorbing member 3bb are arranged on the core 3bc of the vacuum heat insulating body 3b. The core member 3bc is provided with a suction member recess 3bcb and a reinforcing member position pin pin mark in a part thereof. Specifically, the reinforcing members 3bca are arranged in pairs on the left and right sides of the inner side of the inner plate 3c (see FIG. 5) in the longitudinal direction of the core member 3bc. The reinforcing member 3bca is formed in a curved surface shape along the convex portion 10 (see FIG. 8 and FIG. 10) from the flat portion inside the core material 3bc. Further, the flange portion 11 is formed by bending the end portion in the short direction of the reinforcing member 3bca. The flange portion 11 is arranged so as to extend from the end in the short direction of the reinforcing member 3bca into the core member 3bc so as to bite into the core member 3bc.
　また、真空断熱体３ｂ内の芯材３ｂｃには、図９に示すように、吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが、複数箇所、外板３ａ（図５参照）側に形成されている。吸着部材凹部３ｂｃｂは、吸着部材３ｂｂを真空断熱体３ｂの真空封止組立作業時に位置決めするため、および、数量管理するために設けられている。 Further, as shown in FIG. 9, the core member 3bc in the vacuum heat insulating body 3b is formed with a plurality of suction member recesses 3bcb for housing the suction member 3bb on the outer plate 3a (see FIG. 5) side. ing. The adsorbing member recess 3bcb is provided for positioning the adsorbing member 3bb during the vacuum sealing assembly operation of the vacuum heat insulating body 3b and for quantity control.
　また、芯材３ｂｃは、芯材３ｂｃの発泡成形時に、補強部材３ｂｃａをウレタン発泡金型にセットする時の位置決めを分かり易くするために、図１０に示すように、芯材３ｂｃは、補強部材位置決めピン跡３ｂｃｃを有している。 Further, as shown in FIG. 10, the core material 3bc is a reinforcing member for facilitating the positioning when the reinforcing member 3bca is set in the urethane foam mold during foam molding of the core material 3bc. It has a positioning pin mark 3bcc.
　また、補強部材３ｂｃａは、芯材３ｂｃよりも熱収縮による変化の少ない材料、例えば金属性の板金などが用いられている。 Further, the reinforcing member 3bca is made of a material that is less changed by thermal contraction than the core material 3bc, for example, a metallic sheet metal.
　また、ベース部材３ｂｄ（図８および図９参照）は、異材質の熱可塑性樹脂が積層されて形成されている。 Further, the base member 3bd (see FIGS. 8 and 9) is formed by laminating different thermoplastic resins.
　また、シール部材３ｂａは、アルミ箔の両面が樹脂フィルムでラミネートされて積層されて形成されている。 Further, the sealing member 3ba is formed by laminating both surfaces of an aluminum foil with a resin film.
　以上のように構成された真空断熱筐体（冷蔵室扉３）について、以下その動作および作用を説明する。 The operation and action of the vacuum heat insulating casing (refrigeration room door 3) configured as described above will be described below.
　まず、真空断熱筐体である冷蔵室扉３の「そり現象」について説明する。冷蔵室扉３の断熱構造およびガスケット３ｄにより、冷蔵庫本体２の冷蔵室内側は、冷蔵室外側の熱から遮断され、冷凍システムの温度制御により、冷蔵室内の温度は、所定温度に冷却される。 First, the “sledge phenomenon” of the refrigerator door 3 that is a vacuum heat insulating casing will be described. By the heat insulating structure of the refrigerator compartment door 3 and the gasket 3d, the refrigerator compartment side of the refrigerator body 2 is shielded from the heat outside the refrigerator compartment, and the temperature of the refrigerator compartment is cooled to a predetermined temperature by temperature control of the refrigeration system.
　ここで、「そり現象」を簡単に説明するために、特に夏場の気温が高い時を例に、以下説明する。冷蔵室扉３は、冷蔵室外側の環境の外気温度３０～４０℃により、冷蔵室扉３の冷蔵室外側は熱膨張する。一方、冷蔵室内側の室温は、約０～１０℃の範囲で温度制御され、冷蔵室扉３の冷蔵室内側は、熱収縮が生じる。これにより、冷蔵室扉３には、庫外側が膨らむように「そり」が発生する力が働く。 Here, in order to briefly explain the “sledge phenomenon”, the following explanation will be given by taking an example when the temperature is particularly high in summer. The outside of the refrigerator compartment door 3 is thermally expanded by the outside air temperature of 30 to 40 ° C. in the environment outside the refrigerator compartment. On the other hand, the room temperature inside the refrigerator compartment is controlled in the range of about 0 to 10 ° C., and the inside of the refrigerator compartment door 3 is thermally contracted. Thereby, the force which generate | occur | produces a "sledge" acts on the refrigerator compartment door 3 so that the warehouse outer side may swell.
　しかしながら、本実施の形態では、冷蔵室扉３の内板３ｃは、冷蔵室内側となる庫内部の肉厚Ｔ１（図４参照）より、冷蔵室外側となる外周部の肉厚Ｔ２（図４参照）が大きくなるよう構成されている。すなわち、内板３ｃは、肉厚の異なる部分を有する偏肉構成となっている。具体的には、内板３ｃは、ガスケット３ｄのアンカー部１２を固定するための凹部１３を境に、内板３ｃの庫内側の内板庫内部１５の肉厚Ｔ１より、冷蔵室外側となる内板外周部１４の肉厚Ｔ２が大きくなるよう、構成されている。このような構成により、内板３ｃの庫内側の熱収縮も少なくでき、冷蔵室内外に生じた熱収縮を緩和することができるので、冷蔵室扉３全体のそり発生を防止できる。 However, in this embodiment, the inner plate 3c of the refrigerator compartment door 3 has a wall thickness T2 (see FIG. 4) at the outer peripheral portion that is the outside of the refrigerator compartment, rather than the wall thickness T1 (see FIG. 4) inside the refrigerator compartment. Reference) is configured to be large. That is, the inner plate 3c has an uneven thickness structure having portions with different thicknesses. Specifically, the inner plate 3c is located outside the refrigerating chamber from the thickness T1 of the inner plate interior 15 inside the inner plate 3c, with the recess 13 for fixing the anchor portion 12 of the gasket 3d as a boundary. It is comprised so that thickness T2 of the inner-plate outer peripheral part 14 may become large. With such a configuration, the thermal contraction inside the inner plate 3c can be reduced, and the thermal contraction generated inside and outside the refrigerator compartment can be alleviated, so that the warpage of the entire refrigerator compartment door 3 can be prevented.
　また、本実施の形態では、真空断熱筐体である冷蔵室扉３の真空断熱体３ｂは、内部に芯材３ｂｃと補強部材３ｂｃａとを備える。また、真空断熱体３ｂは、シール部材３ｂａとベース部材３ｂｄとで内部が真空密閉された構造を有する。このような構成により、真空断熱体３ｂの曲げ剛性が向上し、更に内部が真空封止され、剛性が増す。よって、このような構成により、冷蔵庫内外の温度差で生じる熱収縮を低減することができ、冷蔵室扉３全体のそり発生を抑制することができる。 In the present embodiment, the vacuum heat insulating body 3b of the refrigerator compartment door 3, which is a vacuum heat insulating casing, includes a core material 3bc and a reinforcing member 3bca inside. The vacuum heat insulating body 3b has a structure in which the inside is vacuum-sealed by a seal member 3ba and a base member 3bd. With such a configuration, the bending rigidity of the vacuum heat insulating body 3b is improved, the inside is further vacuum-sealed, and the rigidity is increased. Therefore, with such a configuration, heat shrinkage caused by a temperature difference between the inside and outside of the refrigerator can be reduced, and warpage of the entire refrigerator compartment door 3 can be suppressed.
　また、芯材３ｂｃを形成する際、補強部材３ｂｃａは、連続気泡ウレタン発泡と同時に連続気泡ウレタンと一体成形されるので、芯材３ｂｃと補強部材３ｂｃａとは一体に形成される。このような構成により、さらに真空断熱体３ｂの曲げ剛性を向上させることができ、冷蔵室扉３全体のそり発生を抑制することができる。 Further, when the core material 3bc is formed, the reinforcing member 3bca is integrally formed with the open cell urethane simultaneously with the open cell urethane foaming. Therefore, the core material 3bc and the reinforcing member 3bca are integrally formed. With such a configuration, it is possible to further improve the bending rigidity of the vacuum heat insulating body 3b, and to suppress warpage of the entire refrigerator compartment door 3.
　また、補強部材３ｂｃａには、芯材３ｂｃよりも熱収縮による変化の少ない材料、例えば金属性の板金などが用いられている。このような構成により、より確実に真空断熱体３ｂの曲げ剛性を向上させることができ、冷蔵室扉３全体のそり発生を抑制することができる。 Further, the reinforcing member 3bca is made of a material that is less likely to change due to thermal contraction than the core material 3bc, such as a metallic sheet metal. With such a configuration, the bending rigidity of the vacuum heat insulating body 3b can be improved more reliably, and the warpage of the entire refrigerator compartment door 3 can be suppressed.
　また、真空断熱体３ｂを構成するベース部材３ｂｄは、異材質の熱可塑性樹脂が積層されて形成されている。また、ベース部材３ｂｄは、水および空気などのガスバリア性を有する。このような構成により、真空成形などで自由な形状に形成することができるとともに、真空封止後の外部からの水および空気などのガスの浸入を防止でき、真空度を保つことができる。よって、断熱性能も長期に保つことができる。 Further, the base member 3bd constituting the vacuum heat insulator 3b is formed by laminating different thermoplastic resins. The base member 3bd has gas barrier properties such as water and air. With such a configuration, it can be formed into a free shape by vacuum forming or the like, and intrusion of gas such as water and air from the outside after vacuum sealing can be prevented, and the degree of vacuum can be maintained. Therefore, heat insulation performance can be maintained for a long time.
　また、真空断熱体３ｂを構成するシール部材３ｂａは、極薄アルミ箔の両面が樹脂フィルムでラミネートされて積層されている。また、シール部材３ｂａは、水および空気などのガスバリア性を有する。このような構成により、真空封止後の外部からの水および空気などのガスの浸入を防止でき、真空度を保つことができる。よって、断熱性能も長期に保つことができる。 The sealing member 3ba constituting the vacuum heat insulating body 3b is laminated by laminating both surfaces of an ultrathin aluminum foil with a resin film. The seal member 3ba has gas barrier properties such as water and air. With such a configuration, it is possible to prevent intrusion of gases such as water and air from the outside after vacuum sealing, and to maintain a degree of vacuum. Therefore, heat insulation performance can be maintained for a long time.
　また、真空断熱体３ｂ内には、吸着部材３ｂｂが収納されている。このような構成により、真空断熱筐体の内部に発生する水および空気など、或いは外部から浸入する水および空気などを、吸着部材３ｂｂにより、吸着させることができる。よって、このような構成により、真空封止後に、真空断熱筐体の内部から発生する水および空気、或いは外部から浸入する水および空気などのガスを、吸着部材３ｂｂに吸着させ、真空度を悪化させないので、断熱性能も長期に保つことができる。 Further, an adsorption member 3bb is accommodated in the vacuum heat insulator 3b. With such a configuration, water and air generated inside the vacuum heat insulating housing or water and air entering from the outside can be adsorbed by the adsorbing member 3bb. Therefore, with such a configuration, after vacuum sealing, gas such as water and air generated from the inside of the vacuum heat insulating housing or water and air entering from the outside is adsorbed to the adsorbing member 3bb, and the degree of vacuum is deteriorated. Insulation performance can be maintained for a long time.
　また、真空断熱体３ｂ内に設けられた芯材３ｂｃの吸着部材凹部３ｂｃｂは、真空断熱体３ｂの真空封止組立作業時に、位置決めするため、および、数量管理するために設けられている。 Further, the suction member recess 3bcb of the core member 3bc provided in the vacuum heat insulator 3b is provided for positioning and quantity control during the vacuum sealing assembly work of the vacuum heat insulator 3b.
　補強部材位置決めピン跡３ｂｃｃは、芯材３ｂｃの発泡成形時に、補強部材３ｂｃａをウレタン発泡金型にセットする時の位置決めを容易にするためのものである。 The reinforcing member positioning pin mark 3bcc is for facilitating positioning when the reinforcing member 3bca is set in the urethane foam mold during foam molding of the core material 3bc.
　真空断熱体３ｂ内に設けられた芯材３ｂｃの吸着部材凹部３ｂｃｂ、および、補強部材３ｂｃａをウレタン発泡金型にセットする時の位置決めを容易にするための補強部材位置決めピン跡３ｂｃｃは、何れも、組立時の作業効率を向上させることができる。また、吸着部材凹部３ｂｃｂおよび補強部材位置決めピン跡３ｂｃｃにより、欠品のない物作りを確実に行うことができる。 The suction member recess 3bcb of the core member 3bc provided in the vacuum heat insulator 3b and the reinforcing member positioning pin mark 3bcc for facilitating positioning when the reinforcing member 3bca is set in the urethane foam mold are both provided. The work efficiency during assembly can be improved. In addition, it is possible to surely make a product without any shortage due to the suction member recess 3bcb and the reinforcing member positioning pin mark 3bcc.
　また、吸着部材３ｂｂは、真空断熱体３ｂの内部に発生する水および空気など、或いは外部から浸入する水および空気などを吸着するので、真空断熱体３ｂの真空度を長期に保つことができ、断熱性能も長期に保つことができる。 Further, since the adsorbing member 3bb adsorbs water and air generated inside the vacuum heat insulating body 3b or water and air entering from the outside, the vacuum degree of the vacuum heat insulating body 3b can be maintained for a long period of time. Thermal insulation performance can be maintained for a long time.
　なお、本実施の形態では、真空断熱筐体の例として冷蔵室扉３を用いて説明したが、これに限定されるものではなく、製氷室扉４、野菜室扉５および冷凍室扉６等にも適用することができる。 In the present embodiment, the refrigerator compartment door 3 has been described as an example of the vacuum heat insulating casing. However, the present invention is not limited thereto, and the ice making compartment door 4, the vegetable compartment door 5, the freezer compartment door 6, and the like. It can also be applied to.
　（実施の形態２）
　図１２は、本開示の実施の形態２における真空断熱筐体の真空断熱体を構成する芯材および吸着部材の斜視図である。図１３は、本開示の実施の形態２における真空断熱筐体の真空断熱体内に配置された吸着部材の環境温度と吸着速度との関係を示すグラフである。なお、本開示の実施の形態１と同一の構成は同一符号を付して詳細な説明は省略する。 (Embodiment 2)
FIG. 12 is a perspective view of a core member and a suction member that constitute a vacuum heat insulating body of a vacuum heat insulating casing according to the second embodiment of the present disclosure. FIG. 13 is a graph showing a relationship between the environmental temperature and the adsorption speed of the adsorption member arranged in the vacuum insulation body of the vacuum insulation case according to the second embodiment of the present disclosure. In addition, the same structure as Embodiment 1 of this indication attaches | subjects the same code | symbol, and abbreviate | omits detailed description.
　図１２に示すように、真空断熱体３ｂ内の外板３ａ側（高温側）（図５参照）には、吸着部材３ｂｂが配置されている。具体的には、真空断熱体３ｂ内の芯材３ｂｃの外板３ａ側（高温側）に、複数箇所、吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが設けられている。吸着部材凹部３ｂｃｂは、吸着部材３ｂｂを真空断熱体３ｂの真空封止組立作業時に位置決めするため、および、数量管理するために設けられたものである。 As shown in FIG. 12, the adsorbing member 3bb is arranged on the outer plate 3a side (high temperature side) (see FIG. 5) in the vacuum heat insulating body 3b. Specifically, suction member recesses 3bcb for housing the suction member 3bb are provided at a plurality of locations on the outer plate 3a side (high temperature side) of the core 3bc in the vacuum heat insulator 3b. The adsorbing member recess 3bcb is provided for positioning the adsorbing member 3bb at the time of vacuum sealing assembly work of the vacuum heat insulating body 3b and for quantity control.
　また、芯材３ｂｃは、多孔性構造体である連続気泡ウレタンフォームで形成される。芯材３ｂｃが形成される際、連続気泡ウレタンの発泡と同時に、吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが成形される。 Further, the core material 3bc is formed of an open cell urethane foam which is a porous structure. When the core 3bc is formed, the suction member recess 3bcb for housing the suction member 3bb is formed simultaneously with the foaming of the open cell urethane.
　また、吸着部材３ｂｂは、真空断熱体３ｂの内部に発生する水および空気など、或いは外部から浸入する水および空気などを吸着する。 Further, the adsorbing member 3bb adsorbs water and air generated inside the vacuum heat insulating body 3b or water and air entering from the outside.
　図１３に示すように、温度が高いほど吸着部材の吸着速度が速くなることを示している。 As shown in FIG. 13, the higher the temperature, the faster the adsorption speed of the adsorption member.
　以上のように構成された真空断熱筐体の一例である冷蔵室扉３について、以下その動作および作用を説明する。 The operation and action of the refrigerator compartment door 3 which is an example of the vacuum heat insulating casing configured as described above will be described below.
　真空断熱体３ｂ内の芯材３ｂｃに配置された吸着部材３ｂｂは、芯材３ｂｃの外板３ａ側（高温側）に配置されている。このような構成により、吸着部材３ｂｂの吸着速度と環境温度特性とから、吸着速度を速くできる。よって、このような構成により、冷蔵庫が組み立てられて、冷蔵庫を運転させた状態で、真空断熱体３ｂ内の真空度を長期に亘って維持することができる。これにより、冷蔵庫の信頼性を高めることができる。 The adsorption member 3bb disposed on the core material 3bc in the vacuum heat insulating body 3b is disposed on the outer plate 3a side (high temperature side) of the core material 3bc. With such a configuration, the adsorption speed can be increased from the adsorption speed of the adsorption member 3bb and the environmental temperature characteristics. Therefore, with such a configuration, the degree of vacuum in the vacuum heat insulating body 3b can be maintained for a long time in a state where the refrigerator is assembled and the refrigerator is operated. Thereby, the reliability of a refrigerator can be improved.
　また、芯材３ｂｃは、多孔性構造体である連続気泡ウレタンフォームで形成されている。また、芯材３ｂｃが形成される際、連続気泡ウレタン発泡と同時に、吸着部材３ｂｂを収納するための吸着部材凹部３ｂｃｂが成形される。このような構成により、吸着部材３ｂｂを容易に配置できるとともに、組立工程時の欠品を防止できる。 Further, the core material 3bc is formed of an open cell urethane foam which is a porous structure. Further, when the core material 3bc is formed, the suction member recess 3bcb for housing the suction member 3bb is formed simultaneously with the foaming of the open cell urethane. With such a configuration, the adsorbing member 3bb can be easily arranged, and a shortage during the assembly process can be prevented.
　また、吸着部材凹部３ｂｃｂに、吸着部材３ｂｂが収納されている。このような構成により、芯材３ｂｃと外板３ａとの間に凹凸が生じることなく、冷蔵室扉３の組立性を高めることができる。 Further, the suction member 3bb is accommodated in the suction member recess 3bcb. With such a configuration, the assemblability of the refrigerator compartment door 3 can be improved without causing irregularities between the core material 3bc and the outer plate 3a.
　また、吸着部材３ｂｂは、真空断熱体３ｂの内部に発生する水および空気など、或いは外部から浸入する水および空気などを吸着する。よって、このような構成により、真空断熱体３ｂ内の真空度を長期に保つことができ、断熱性能も長期に保つことができる。 Further, the adsorbing member 3bb adsorbs water and air generated inside the vacuum heat insulating body 3b or water and air entering from the outside. Therefore, with such a configuration, the degree of vacuum in the vacuum insulator 3b can be maintained for a long time, and the heat insulating performance can also be maintained for a long time.
　（実施の形態３）
　図１４は、本開示の実施の形態３における真空断熱筐体の芯材の発泡成形型の構成を説明するための図である。図１５は、本開示の実施の形態３における真空断熱筐体の芯材の発泡成形型の構成を説明するための図である。なお、本開示の実施の形態１および実施の形態２と同一の構成は、同一符号を付して詳細な説明は省略する。 (Embodiment 3)
FIG. 14 is a diagram for describing a configuration of a foam molding die of a core material of a vacuum heat insulating casing in the third embodiment of the present disclosure. FIG. 15 is a diagram for describing a configuration of a foam molding die of a core material of a vacuum heat insulating casing in the third embodiment of the present disclosure. Note that the same configurations as those of the first and second embodiments of the present disclosure are denoted by the same reference numerals, and detailed description thereof is omitted.
　以下、連続気泡発泡ウレタンの連続気泡発泡成形金型７について説明する。 Hereinafter, the open-cell foaming mold 7 of open-cell foamed urethane will be described.
　図１４に示すように、連続気泡発泡ウレタンの連続気泡発泡成形金型７は、発泡成形上型７ａと、発泡成形下型７ｂとで構成され、上下分割型構造を有する。 As shown in FIG. 14, an open-cell foamed mold 7 of open-cell foamed urethane is composed of a foam-molded upper mold 7a and a foam-molded lower mold 7b, and has a vertically divided mold structure.
　また、図１５に示すように、発泡成形上型７ａおよび発泡成形下型７ｂそれぞれは、さらに複数に分割された構造を有している。具体的には、発泡成形上型７ａの吸着部材凹部３ｂｃｂ（図９および図１２参照）を形成する部分を、発泡成形上型７ａと上面分割型７ａｂとの分割ラインとしている。また、発泡成形下型７ｂは、側部それぞれが分割された下面分割型７ｂａ（４面）を有する。発泡成形下型７ｂの下面分割型７ｂａの、芯材３ｂｃ（図７および図１１参照）の角部に対応する部分を、対角線状（斜辺状）の（発泡成形下型７ｂａとの）分割ラインとしている。 Further, as shown in FIG. 15, each of the foam-molded upper mold 7a and the foam-molded lower mold 7b has a structure further divided into a plurality of parts. Specifically, a portion where the adsorbing member recess 3bcb (see FIGS. 9 and 12) of the foam molding upper mold 7a is formed as a dividing line between the foam molding upper mold 7a and the upper surface split mold 7ab. In addition, the foam-molded lower mold 7b has a lower surface divided mold 7ba (four surfaces) in which each side portion is divided. The part corresponding to the corner of the core material 3bc (see FIGS. 7 and 11) of the lower surface split mold 7ba of the foam molded lower mold 7b is a diagonal (slanted) split line (with the foam molded lower mold 7ba). It is said.
　上記のような構成により、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くする。また、発泡成形上型７ａと、発泡成形下型７ｂとの型の合わせ目は、ガス抜け効果を奏する。よって、成形品の表面形状にガス抜けの悪さによる欠肉もない、発泡成形品を成形することができる。 With the above configuration, gas generated during foaming of open-cell urethane can be easily removed. Further, the joint between the foam-molded upper mold 7a and the foam-molded lower mold 7b has a gas releasing effect. Therefore, it is possible to mold a foam molded product in which the surface shape of the molded product does not have a lack of thickness due to poor gas escape.
　また、発泡成形上型７ａは、複数に分割された構造を有する。このような構成により、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くしているので、成形品の表面形状にガス抜けの悪さによる欠肉もない発泡成形品を成形することができる。 The foam-molded upper mold 7a has a structure divided into a plurality of parts. With such a configuration, the gas generated during the foam molding of open-cell urethane can be easily removed, so that a foam molded product can be molded in which the surface shape of the molded product does not have a lack of gas due to poor gas escape.
　また、発泡成形下型７ｂは、複数に分割された構造を有する。このような構成により、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くなるため、成形品の表面形状にガス抜けの悪さによる欠肉もない発泡成形品を成形することができる。 Further, the foam molded lower mold 7b has a structure divided into a plurality of parts. With such a configuration, the gas generated during the foam molding of open-cell urethane can be easily removed, so that a foam molded product in which the surface shape of the molded product does not have a lack of gas due to poor gas escape can be formed.
　また、連続気泡ウレタンの成形後の成形品の表面は、金型分割構造により、連続気泡ウレタンの発泡成形時に発生するガスを抜け易くしている。よって、このような構成により、ガス抜き跡の分割部にバリを発生することができる。このような構成により、成形品の表面形状にガス抜けの悪さによる欠肉もない発泡成形品を成形することができる。 Also, the surface of the molded product after the molding of open-cell urethane is made easy to escape the gas generated during the foam-molding of open-celled urethane by the mold division structure. Therefore, with such a configuration, it is possible to generate burrs in the divided portion of the degassing trace. With such a configuration, it is possible to mold a foam molded product in which the surface shape of the molded product is free from lacking due to poor gas escape.
　以上述べたように、本開示は、断熱性能を高めながら、真空断熱筐体の内外面に温度差が生じても、真空断熱筐体のそり変形を長期間抑制することができる真空断熱筐体を提供する。よって、本開示時は、冷蔵庫に限らず、自動車、ヒートポンプ式給湯機、電気式湯沸かし器、炊飯器、浴槽、並びに、住宅の外壁および屋根などの断熱構造にも適用できる。 As described above, the present disclosure provides a vacuum heat insulating casing that can suppress warping deformation of the vacuum heat insulating casing for a long period of time even if a temperature difference occurs between the inner and outer surfaces of the vacuum heat insulating casing while improving the heat insulating performance. I will provide a. Therefore, the present disclosure can be applied not only to refrigerators but also to heat insulating structures such as automobiles, heat pump water heaters, electric water heaters, rice cookers, bathtubs, and outer walls and roofs of houses.
　１　冷蔵庫
　２　冷蔵庫本体
　３　冷蔵室扉（真空断熱筐体）
　３ａ　外板
　３ｂ　真空断熱体
　３ｂａ　シール部材
　３ｂｂ　吸着部材
　３ｂｃ　芯材
　３ｂｃａ　補強部材
　３ｂｃｂ　吸着部材凹部
　３ｂｃｃ　補強部材位置決めピン跡
　３ｂｄ　ベース部材
　３ｃ　内板
　３ｄ　ガスケット
　４　製氷室扉
　５　野菜室扉
　６　冷凍室扉
　７　連続気泡発泡成形金型
　７ａ　発泡成形上型
　７ａｂ　上面分割型
　７ｂ　発泡成形下型
　７ｂａ　下面分割型
　１０　凸部
　１１　フランジ部
　１２　アンカー部
　１３　凹部
　１４　内板外周部
　１５　内板庫内部 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Refrigerator main body 3 Refrigeration room door (vacuum insulation housing)
3a outer plate 3b vacuum insulator 3ba sealing member 3bb adsorbing member 3bc core material 3bca reinforcing member 3bcb adsorbing member recess 3bcc reinforcing member positioning pin mark 3bd base member 3c inner plate 3d gasket 4 ice making door 5 freezer compartment door 6 freezer compartment door 7 Open-cell foaming mold 7a Foam molding upper mold 7ab Upper surface split mold 7b Foam molding lower mold 7ba Lower surface split mold 10 Convex part 11 Flange part 12 Anchor part 13 Concave part 14 Inner plate outer peripheral part 15 Inner plate interior

Claims (8)

  1. 外板と、内板と、前記外板および前記内板の間に配置された真空断熱体とを備え、
    前記真空断熱体は、内部に芯材と補強部材とを有し、
    前記真空断熱体は、シール部材とベース部材とで内部が真空密閉された構造を有する真空断熱筐体。     An outer plate, an inner plate, and a vacuum heat insulator disposed between the outer plate and the inner plate,
    The vacuum insulator has a core material and a reinforcing member inside,
    The vacuum heat insulating body is a vacuum heat insulating casing having a structure in which a seal member and a base member are hermetically sealed in a vacuum.
  2. 前記芯材と前記補強部材とが一体形成された
    請求項１に記載の真空断熱筐体。     The vacuum heat insulating casing according to claim 1, wherein the core member and the reinforcing member are integrally formed.
  3. 前記補強部材は、前記芯材よりも熱収縮による変化の少ない材料で構成されている
    請求項１または２に記載の真空断熱筐体。     The vacuum insulation case according to claim 1, wherein the reinforcing member is made of a material that is less changed by heat shrinkage than the core material.
  4. 外板と、内板と、前記外板および前記内板の間の内部に配置された真空断熱体とを備え、
    前記真空断熱体は、内部に芯材を有するとともに、シール部材とベース部材とで内部が真空密閉された構造を有し、
    前記内板は、外周部の肉厚が、内部の肉厚より大きくなるよう構成された真空断熱筐体。     An outer plate, an inner plate, and a vacuum insulator disposed inside the outer plate and the inner plate,
    The vacuum heat insulating body has a core material inside, and has a structure in which the inside is vacuum-sealed with a seal member and a base member,
    The inner plate is a vacuum heat insulating casing configured such that the thickness of the outer peripheral portion is larger than the thickness of the inner plate.
  5. 前記ベース部材は、異材質の熱可塑性樹脂で積層されて形成された請求項１から４のいずれか一項に記載の真空断熱筐体。 5. The vacuum heat insulating casing according to claim 1, wherein the base member is formed by being laminated with a thermoplastic resin of a different material.
  6. 前記シール部材は、アルミ箔の両面が樹脂フィルムでラミネートされて積層された
    請求項１から５のいずれか一項に記載の真空断熱筐体。     The vacuum insulating casing according to any one of claims 1 to 5, wherein the sealing member is laminated by laminating both surfaces of an aluminum foil with a resin film.
  7. 前記真空断熱体の内部に吸着部材を備えた
    請求項１から６のいずれか一項に記載の真空断熱筐体。     The vacuum heat insulation housing | casing as described in any one of Claim 1 to 6 provided with the adsorption | suction member inside the said vacuum heat insulating body.
  8. 請求項１から７のいずれか一項に記載の真空断熱筐体を備えた冷蔵庫。 The refrigerator provided with the vacuum heat insulation housing | casing as described in any one of Claim 1 to 7.
PCT/JP2018/012673 2017-03-30 2018-03-28 Vacuum heat insulation case and refrigerator using same WO2018181440A1 (en)

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JP2017066970A JP2018169097A (en) 2017-03-30 2017-03-30 Vacuum heat insulation housing and refrigerator
JP2017066972A JP6850967B2 (en) 2017-03-30 2017-03-30 Foam molding mold
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757520A (en) * 1952-10-23 1956-09-19 Gen Electric Improvements in and relating to insulating structures
JP2002257465A (en) * 2001-02-27 2002-09-11 Toshiba Corp Heat insulation door structure of refrigerator
JP2008185220A (en) * 2008-04-24 2008-08-14 Hitachi Appliances Inc Vacuum heat insulation material
JP2013119966A (en) * 2011-12-06 2013-06-17 Toshiba Corp Heat insulation box
JP2015096740A (en) * 2013-11-15 2015-05-21 パナソニックＩｐマネジメント株式会社 Vacuum heat insulation housing
WO2016113423A1 (en) * 2015-01-15 2016-07-21 Kingspan Holdings (Irl) Limited Vacuum insulating panel
WO2016113907A1 (en) * 2015-01-16 2016-07-21 三菱電機株式会社 Refrigerator

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Publication number Priority date Publication date Assignee Title
WO2016135808A1 (en) * 2015-02-23 2016-09-01 三菱電機株式会社 Heat-insulation housing, heat-insulation door, and refrigerator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB757520A (en) * 1952-10-23 1956-09-19 Gen Electric Improvements in and relating to insulating structures
JP2002257465A (en) * 2001-02-27 2002-09-11 Toshiba Corp Heat insulation door structure of refrigerator
JP2008185220A (en) * 2008-04-24 2008-08-14 Hitachi Appliances Inc Vacuum heat insulation material
JP2013119966A (en) * 2011-12-06 2013-06-17 Toshiba Corp Heat insulation box
JP2015096740A (en) * 2013-11-15 2015-05-21 パナソニックＩｐマネジメント株式会社 Vacuum heat insulation housing
WO2016113423A1 (en) * 2015-01-15 2016-07-21 Kingspan Holdings (Irl) Limited Vacuum insulating panel
WO2016113907A1 (en) * 2015-01-16 2016-07-21 三菱電機株式会社 Refrigerator

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